You'll probably want to show examples in all the languages you target. I wanted to see how good the Vietnamese is for my kids but signing up (especially on mobile) just to see if the tool is even useful is enough friction that I didn't bother.
Sad to hear. We will think about a solution for this. But, honestly I don’t know anyone who knows Vietnamese, so it would be such a useful feedback. That’s what the internet is for… grilling random people on the internet :)